CN215018737U

CN215018737U - Proximal femur extramedullary fixing device

Info

Publication number: CN215018737U
Application number: CN202120684889.5U
Authority: CN
Inventors: 杨运发
Original assignee: Guangzhou First Peoples Hospital
Current assignee: Guangzhou First Peoples Hospital
Priority date: 2021-04-02
Filing date: 2021-04-02
Publication date: 2021-12-07
Anticipated expiration: 2031-04-02

Abstract

The utility model relates to the technical field of medical equipment, a thighbone near-end extramedullary fixing device is disclosed, include: a proximal plate, fixation pegs and support; the upper part of the near end plate is provided with a first through hole, and the middle part of the near end plate is provided with a second through hole; the fixing nail is rotatably arranged in the first through hole in a penetrating way; the supporting piece penetrates through the second through hole, and the front end of the supporting piece is abutted to the middle of the fixing nail. The device has the advantages of simple and visual operation, large degree of freedom, less X-ray exposure, reliable fixation and no need of hip adduction position nails.

Description

Proximal femur extramedullary fixing device

Technical Field

The utility model relates to the technical field of medical equipment, especially, relate to a thighbone near-end extramedullary fixing device.

Background

The intertrochanteric/intertrochanteric fracture of the old femur is a common disease and frequently encountered disease, commonly called 'death fracture'. The incidence will rise further as the population ages further. To reduce mortality and disability rates, the first intraoperative fixed therapy has become a global consensus. Intra-operative fixation devices fall into two categories: the proximal femoral extramedullary nail plate system and the proximal femoral intramedullary nail system both reduce and fix intertrochanteric/intertrochanteric fractures under X-ray monitoring.

The prior proximal femur intramedullary fixation system needs a hip adduction position nail, satisfactory fracture reduction is difficult to obtain and maintain, head and neck nails are implanted with a plurality of interference factors and a plurality of X-rays are exposed, the operation of the proximal femur extramedullary nail plate system is more convenient, visual and free than the proximal femur intramedullary nail system, but the prior proximal femur extramedullary nail plate fixation system has higher failure rate and narrower adaptation diseases than the proximal femur intramedullary nail system.

SUMMERY OF THE UTILITY MODEL

The utility model aims at: provides a proximal femur extramedullary fixing device which has simple and visual operation, large freedom degree, less X-ray exposure, reliable fixation and no need of hip adduction position nail.

In order to achieve the above object, the present invention provides a proximal femur extramedullary fixing device, comprising: a proximal plate, fixation pegs and support;

the upper part of the near end plate is provided with a first through hole, and the middle part of the near end plate is provided with a second through hole;

the fixing nail is rotatably arranged in the first through hole in a penetrating way;

the supporting piece penetrates through the second through hole, and the front end of the supporting piece is abutted to the middle of the fixing nail.

In some embodiments, the fixation peg is disposed at an angle relative to the proximal plate.

In some embodiments, the staple is angled at an angle of 110 ° to 150 ° relative to the proximal plate.

In some embodiments, the fixing device comprises a fixing piece, and the fixing nail is fixedly arranged on the upper part of the proximal plate through the fixing piece.

In some embodiments, the proximal plate comprises a plurality of locking pieces, and the middle part and the lower part of the proximal plate are provided with third through holes matched and locked with the locking pieces.

In some embodiments, the locking element is perpendicular to the proximal plate.

In some embodiments, the locking member is a screw and the third through hole is a threaded hole.

In some embodiments, two of the third through holes are provided in the middle of the proximal plate, and one of the third through holes is provided in the lower portion of the proximal plate.

In some embodiments, a reconstruction plate is further included, positioned above the proximal plate, for reconstructing an outer lateral wall of the proximal end of the femur.

In some embodiments, the reconstruction plate is provided with a threaded hole, a screw penetrates through the threaded hole, and the reconstruction plate is fixed on the outer side wall through the screw.

The utility model provides a thighbone near-end extramedullary fixing device compares with prior art, and its beneficial effect lies in: the proximal end plate is fixed outside the bone, the hip adduction position is not needed in the operation, the clamping action of the perihip muscles can be fully utilized to fix the proximal end plate, and the satisfactory reduction of the fracture can be more easily obtained; by firstly arranging the fixing nail, the interference is less during nail arrangement, and a satisfactory head and neck nail position is more easily obtained; meanwhile, the problem of insufficient mechanical stability of a common extramedullary nail plate fixing device is effectively solved through the arrangement of the supporting piece; and the design of the reconstruction plate enlarges the indications of the extramedullary nail plate fixing device and provides a set of complete solution for intertrochanteric fracture.

Drawings

Fig. 1 is a schematic view of the overall structure of the present invention.

In the figure, 1, a proximal plate; 2. fixing nails; 3. a support member; 4. a fixing member; 5. a locking member; 6. reconstructing a plate; 7. the femur.

Detailed Description

The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are only a part of the embodiments of the present application, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.

In the description of the present application, it is to be understood that the terms "center", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience in describing the present application and simplifying the description, but do not indicate or imply that the referred device or element must have a particular orientation, be constructed in a particular orientation, and be operated, and thus should not be construed as limiting the present application.

The terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present application, "a plurality" means two or more unless otherwise specified.

In the description of the present application, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present application can be understood in a specific case by those of ordinary skill in the art.

As shown in fig. 1, a proximal femoral extramedullary fixation device according to some embodiments of the present application includes: a proximal plate 1, a fixation nail 2 and a support 3; the upper part of the near end plate 1 is provided with a first through hole, and the middle part of the near end plate 1 is provided with a second through hole; the fixing nail 2 is rotatably arranged in the first through hole in a penetrating way; the supporting piece 3 penetrates through the second through hole, and the front end of the supporting piece 3 abuts against the middle of the fixing nail 2.

Based on the scheme, the near-end plate 1 is fixed outside the bone, the hip adduction position is not needed in the operation, the fracture can be reduced by fully utilizing the clamping action of the muscles around the hip, and the satisfactory reduction of the fracture can be more easily obtained; by firstly arranging the fixing nail 2, the interference is less during nail arrangement, and a satisfactory head and neck nail position is more easily obtained; meanwhile, the problem of insufficient mechanical stability of a common extramedullary nail plate fixing device is effectively solved through the lever principle arrangement of the supporting piece 3; the bone fracture reduction device has the advantages that the reduction of the fracture is realized without the need of the hip adduction position, the head and neck nail is firstly placed after the fracture reduction so as to ensure the head and neck nail to be proper in position, the operation is simpler and more convenient, the degree of freedom is higher, the X-ray exposure is less, the fixation is reliable, and the like, and the bone fracture reduction device is suitable for treating various types of intertrochanteric fractures.

In some embodiments, the fixation peg 2 is disposed at an angle with respect to the proximal plate 1. The fixed nail 2 that the slope set up can reach fixed effect with the shape of adaptation thighbone with near-end board 1 after guaranteeing that the fixed nail 2 is put into.

In some embodiments, the angle θ between the staple 2 and the proximal plate 1 is 110 ° to 150 °. Rotatable angle is provided with between staple 2 and the near-end board 1, selects different angles according to the actual conditions in order to reach better treatment, and the scope that can apply is wider moreover, and contained angle theta specifically is 120-135 in this embodiment, and first through-hole specifically is the inclined hole, and the staple 2 of being convenient for rotates on near-end board 1.

In some embodiments, the fixing member 4 is included, and the fixing nail 2 is fixed on the upper part of the proximal plate 1 through the fixing member 4. The mounting 4 is used for fixed staple 2 and nearly end plate 1, because the staple 2 can be for nearly end plate 1 axis of ordinates direction pivoted, rotate and need stably fix staple 1 after certain angle, prevent that it from taking place to rotate once more, can effectively fix the position of staple 2 through mounting 4, prevent that it from rotating, and mounting 4 specifically is the screw, all offers the screw hole that matches with the screw on the top of nearly end plate 1 and mounting 2.

In some embodiments, the proximal plate 1 comprises a plurality of locking members 5, and the middle portion and the lower portion of the proximal plate are provided with third through holes for matching and locking with the locking members 5. Through a plurality of locking pieces 5 and the cooperation of third through hole, guarantee to be fixed in on 7 the outside of thighbone near end plate 1 completely, ensure its stable state, and then guarantee that treatment can reach the expectation.

In some embodiments, the locking member 5 may be locked vertically to the proximal plate 1. The perpendicular arrangement between the locking element 5 and the proximal plate 1 is to ensure a more convenient and stable connection.

In some embodiments, the locking element 5 is a screw and the third through hole is a threaded hole.

In some embodiments, two third through holes are provided in the middle of the proximal plate 1, and one third through hole is provided in the lower portion of the proximal plate 1. The number of the third through holes at each position can be adjusted according to actual conditions, and since the support member 3 is arranged on the second through hole at the middle part of the near-end plate 1, in order to further ensure the stability of the device, two third through holes need to be arranged at positions close to the second through hole, and then the third through holes are fixed through screws. The support 3 and the proximal plate 1 are of a 150-160 locking design.

In some embodiments, the support 3 is a support pin structure.

In some embodiments, a reconstruction plate 6 is further included, which is located above the proximal plate 1, for reconstructing the proximal lateral wall of the femur.

In some embodiments, the reconstruction plate 6 is provided with a threaded hole, a screw is inserted into the threaded hole, and the reconstruction plate 6 is fixed to the outer sidewall through the screw. The reconstruction plate 6 is in a special-shaped and shapeable plate-shaped design, is provided with screw holes and can be provided with screws for fixing the outer side wall, and the reconstruction plate can be selected optionally when the outer side wall needs to be reconstructed.

In summary, in the proximal femur extramedullary fixing device provided by this embodiment, hip adduction is not required during the whole operation, after fracture reduction is satisfactory, the femoral head and neck fixing nail is firstly placed in the appropriate position of the femoral neck through percutaneous minimally invasive surgery, then the proximal femur section is exposed through incision, the proximal femur plate is sleeved in, and then the femoral head and neck nail supporting nail and the like are sequentially placed to complete the fixing operation; if the lateral wall fracture exists, the proximal femur lateral wall reconstruction plate can be sleeved to complete the fixation of the lateral wall. Therefore, the device has the advantages of no need of reduction of fracture at the hip adduction position, capability of ensuring the head and neck nail to be proper in position by firstly placing the head and neck nail after reduction of fracture, simpler and more convenient operation, higher freedom degree, less X-ray exposure, reliable fixation and the like, and is suitable for treating various types of intertrochanteric fractures of femur.

The foregoing is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, a plurality of modifications and replacements can be made without departing from the technical principle of the present invention, and these modifications and replacements should also be regarded as the protection scope of the present invention.

Claims

1. A proximal femoral extramedullary fixation device comprising:

and the supporting piece penetrates through the second through hole, and the front end of the supporting piece is abutted to the fixing nail.

2. The proximal femoral extramedullary fixation device of claim 1 wherein the anterior end of the support member abuts the middle of the fixation pin.

3. The proximal femoral extramedullary fixation device of claim 1 wherein the fixation pegs are obliquely disposed with respect to the proximal plate.

4. The proximal femoral extramedullary fixation device of claim 3 wherein the angle between the fixation nail and the proximal plate is between 110 ° and 150 °.

5. The proximal femoral extramedullary fixation device of claim 1 including a fixation member by which the fixation pin is secured to the upper portion of the proximal plate.

6. The proximal femoral extramedullary fixation device of claim 1 including a plurality of locking members, wherein the proximal plate has third through holes formed in the middle and lower portions thereof for locking with the locking members.

7. The proximal femoral extramedullary fixation device of claim 6 wherein the locking element is perpendicular to the proximal plate.

8. The proximal femoral extramedullary fixation device of claim 6 wherein the locking element is a screw and the third through hole is a threaded hole.

9. The proximal femoral extramedullary fixation device of claim 1 further comprising a reconstruction plate positioned above the proximal plate for reconstructing the lateral wall of the proximal femur.

10. The proximal femoral extramedullary fixation device of claim 9 wherein the reconstruction plate has a threaded hole with a screw therethrough, the reconstruction plate being secured to the lateral wall by the screw.